Guardian opener trolley will not re-engage after pulling the emergency release cord.

Safety first: Ensure the door is fully closed or securely propped before working on the trolley.

• Move trolley to engage point: With the opener disconnected, slide the trolley along the rail until it is near the opener carriage.
• Reset release lever: Pull the red cord toward the opener to reset the latch into the engaged position.
• Run opener: Activate the opener; the carriage should move and the trolley should click into place.
• Inspect trolley: If it will not latch, inspect for broken plastic or bent parts. Replace the Guardian trolley assembly if damaged.